Function

(~17 minutes)

App Service Plans

East US 2 App Service Plan

• App service plans (ASPs) allow the function to run for an extended period of time - and most times can be more affordable to run than the Consumption plan.

• Navigate to the Create App Service Plan resource in the Azure Portal

• Select the appropriate Subscription and the rg-sharethrift resource group

• App Service Plan details

  • Name: service-east2-<<random-number>>

    • ** when creating for west 2 use service-west2-<<random-number>

  • Operating System: Linux

  • Region: East US 2

    • **when creating for west 2 use West US 2

• Pricing Tier

  • Sku and size: B1 (located under category of Dev / Test) ~$12.41/mo

West US 2 App Service Plan

Repeat the same process above, but instead make the following changes

• App Service Plan Name:

  • service-west2-<<random-number>

• Select the Region:

  • US West 2

US East 2 Function

• Start by creating an app service plan - we're selecting the minimal to get us going:

• Navigate to the Create Function App resource in the Azure Portal
• Select the appropriate Subscription and the rg-sharethrift resource group

• Instance Details

  • Function App Name: data-access-east2-<<random-number>>

    • ** when creating for west 2 use data-access-west2<<random-number>>

  • Publish: code

  • Runtime Stack: Node.js

  • Version: 16 LTS (Preview)

  • Region: East US 2

    • ** when creating for west 2 use West US 2

  • Choose Next : Hosting >

• Hosting Details:

  • Storage Account: (select the sharethrift<random number> storage account created earlier)

    • ** when creating for west 2 select the sharethriftwest<random number> account

  • Operating System: linux

  • Plan type: App service plan

  • Linux Plan: service-east2 (B1)

  • Choose Next: Networking (preview) > Monitoring

• Application Insights:

  • Enable Application Insights: Yes

  • Application Insights: sharethrift (East US 2)

    • ** when creating for west 2 select sharethriftwest (West US 2)

  • Choose Review + Create

  • Choose Create (wait for it to complete)

  • Choose Go to resource

• Add App Settings for improved performance

  • In the function app just created navigate to Configuration

  • Choose + New Application Setting for each of the following

    • Ensure the Node App gets rebuilt on the Linux VM that runs the function when deployed

      • Name: SCM_DO_BUILD_DURING_DEPLOYMENT

      • Value: true

      • Name: ENABLE_ORYX_BUILD

      • Value: true

    • Do not add the following - these no longer seem to work..

      • Improve Cold Start performance (details)

        • Name: WEBSITE_RUN_FROM_PACKAGE

        • Value: 1

      • Improve Node performance (details)

        • Name: FUNCTIONS_WORKER_PROCESS_COUNT

        • Value: 10

  • Choose Save

  • Choose Continue (wait until completion)

• Add CORS headers

  • In the function app just created navigate to CORS

  • Check the Enable Access-Control-Allow-Credentials

  • Add the URL of the website created in the CDN step

    • e.g. https://sharethrift<random number>.azureedge.net/

• Add System Assigned Identity

  • In the function app just created navigate to Settings > Identity

  • Under System Assigned, Status : Select On

  • Choose Save - a dialog confirming your choice will appear, click Yes, wait for it complete.

  • Click the Azure Role Assignments button:

    • You will be taken to the Azure Role Assignments Blade

    • Click Add role assignment (preview)

    • In the Add Role Assignment blade

      • Scope: Key Vault

      • Subscription: (choose the appropriate subscription)

      • Resource: sharethrift

      • Role: Key Vault Secrets User (preview)

US West 2 Function

Repeat the same process above, but instead make the following changes

• Name the function:

  • data-access-west2<<random-number>>

• Select the Region:

  • US West 2

• Select the storage account:

  • sharethriftwest<random number> storage account created earlier

• Select the application insights:

  • sharethriftwest (West US 2)

Keyvault Settings

• Need to add Get permissions on secret for the 2 identities you just created

Resources

• Microsoft

  • Functions Reference for NodeJS